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conftest.py 8.87 KiB
import contextlib
import ipaddress
import json
import os
import socket
import tempfile
from pathlib import Path
import orchestrator
import pytest
from alembic import command
from alembic.config import Config
from faker import Faker
from faker.providers import BaseProvider
from orchestrator import app_settings
from orchestrator.db import Database, db
from orchestrator.db.database import ENGINE_ARGUMENTS, SESSION_ARGUMENTS, BaseModel
from sqlalchemy import create_engine
from sqlalchemy.engine import make_url
from sqlalchemy.orm import scoped_session, sessionmaker
from starlette.testclient import TestClient
from gso.main import init_gso_app
class FakerProvider(BaseProvider):
def ipv4_network(self):
ipv4 = self.generator.ipv4()
interface = ipaddress.IPv4Interface(ipv4 + "/24")
network = interface.network.network_address
return ipaddress.IPv4Network(str(network) + "/24")
def ipv6_network(self):
ipv6 = self.generator.ipv6()
interface = ipaddress.IPv6Interface(ipv6 + "/64")
network = interface.network.network_address
return ipaddress.IPv6Network(str(network) + "/64")
@pytest.fixture(scope="session")
def faker() -> Faker:
fake = Faker()
fake.add_provider(FakerProvider)
return fake
@pytest.fixture(scope="session")
def configuration_data() -> dict:
with contextlib.closing(socket.socket(socket.AF_INET, socket.SOCK_STREAM)) as s:
s.bind(("", 0))
s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
yield {
"GENERAL": {"public_hostname": "https://gap.geant.org"},
"RESOURCE_MANAGEMENT": {"todo": "todo"},
"IPAM": {
"INFOBLOX": {
"scheme": "https",
"wapi_version": "v2.12",
"host": "10.0.0.1",
"username": "robot-user",
"password": "robot-user-password",
},
"LO": {
"V4": {"containers": [], "networks": ["10.255.255.0/26"], "mask": 32},
"V6": {"containers": [], "networks": ["dead:beef::/80"], "mask": 128},
"domain_name": ".lo",
"dns_view": "default",
},
"TRUNK": {
"V4": {"containers": ["10.255.255.0/24", "10.255.254.0/24"], "networks": [], "mask": 31},
"V6": {"containers": ["dead:beef::/64", "dead:beee::/64"], "networks": [], "mask": 126},
"domain_name": ".trunk",
"dns_view": "default",
},
"GEANT_IP": {
"V4": {"containers": ["10.255.255.0/24", "10.255.254.0/24"], "networks": [], "mask": 31},
"V6": {"containers": ["dead:beef::/64", "dead:beee::/64"], "networks": [], "mask": 126},
"domain_name": ".geantip",
"dns_view": "default",
},
"SI": {
"V4": {"containers": ["10.255.253.128/25"], "networks": [], "mask": 31},
"V6": {"containers": [], "networks": [], "mask": 126},
"domain_name": ".geantip",
"dns_view": "default",
},
"LT_IAS": {
"V4": {"containers": ["10.255.255.0/24"], "networks": [], "mask": 31},
"V6": {"containers": ["dead:beef:cc::/48"], "networks": [], "mask": 126},
"domain_name": ".geantip",
"dns_view": "default",
},
},
"PROVISIONING_PROXY": {
"scheme": "https",
"api_base": "localhost:44444",
"auth": "Bearer <token>",
"api_version": 1123,
},
}
@pytest.fixture(scope="session")
def data_config_filename(configuration_data) -> str:
file_name = os.path.join(tempfile.gettempdir(), os.urandom(24).hex())
open(file_name, "x").close()
with open(file_name, "wb") as f:
f.write(json.dumps(configuration_data).encode("utf-8"))
f.flush()
os.environ["OSS_PARAMS_FILENAME"] = f.name
yield f.name
@pytest.fixture(scope="session")
def db_uri():
"""Provide the database uri configuration to run the migration on."""
return os.environ.get("DATABASE_URI_TEST", "postgresql://nwa:nwa@localhost/gso-test-db")
def run_migrations(db_uri: str) -> None:
"""Configure the alembic migration and run the migration on the database.
Args:
----
db_uri: The database uri configuration to run the migration on.
Returns:
-------
None
"""
path = Path(__file__).resolve().parent
app_settings.DATABASE_URI = db_uri
alembic_cfg = Config(file_=path / "../gso/alembic.ini")
alembic_cfg.set_main_option("sqlalchemy.url", db_uri)
alembic_cfg.set_main_option("script_location", str(path / "../gso/migrations"))
version_locations = alembic_cfg.get_main_option("version_locations")
alembic_cfg.set_main_option(
"version_locations", f"{version_locations} {os.path.dirname(orchestrator.__file__)}/migrations/versions/schema"
)
command.upgrade(alembic_cfg, "heads")
@pytest.fixture(scope="session")
def database(db_uri):
"""Create database and run migrations and cleanup after wards.
Args:
----
db_uri: The database uri configuration to run the migration on.
"""
db.update(Database(db_uri))
url = make_url(db_uri)
db_to_create = url.database
url = url.set(database="postgres")
engine = create_engine(url)
with engine.connect() as conn:
conn.execute("COMMIT;")
conn.execute(f"SELECT pg_terminate_backend(pid) FROM pg_stat_activity WHERE datname='{db_to_create}';") # noqa
conn.execute(f'DROP DATABASE IF EXISTS "{db_to_create}";') # noqa
conn.execute("COMMIT;")
conn.execute(f'CREATE DATABASE "{db_to_create}";') # noqa
run_migrations(db_uri)
db.wrapped_database.engine = create_engine(db_uri, **ENGINE_ARGUMENTS)
try:
yield
finally:
db.wrapped_database.engine.dispose()
with engine.connect() as conn:
conn.execute("COMMIT;")
# Terminate all connections to the database
conn.execute(
f"SELECT pg_terminate_backend(pid) FROM pg_stat_activity WHERE datname='{db_to_create}';" # noqa
)
conn.execute(f'DROP DATABASE IF EXISTS "{db_to_create}";') # noqa
@pytest.fixture(autouse=True)
def db_session(database):
"""Ensure that tests are executed within a transactional scope that automatically rolls back after completion.
This fixture facilitates a pattern known as 'transactional tests'. At the start, it establishes a connection and
begins an overarching transaction. Any database operations performed within the test function—whether they commit
or not happen within the context of this master transaction.
From the perspective of the test function, it seems as though changes are getting committed to the database,
enabling the tests to query and assert the persistence of data. Yet, once the test completes, this fixture
intervenes to roll back the master transaction. This ensures a clean slate after each test, preventing tests from
polluting the database state for subsequent tests.
Benefits:
- Each test runs in isolation with a pristine database state.
- Avoids the overhead of recreating the database schema or re-seeding data between tests.
Args:
----
database: A fixture reference that initializes the database.
"""
with contextlib.closing(db.wrapped_database.engine.connect()) as test_connection:
# Create a new session factory for this context.
session_factory = sessionmaker(bind=test_connection, **SESSION_ARGUMENTS)
scoped_session_instance = scoped_session(session_factory, scopefunc=db.wrapped_database._scopefunc)
# Point the database session to this new scoped session.
db.wrapped_database.session_factory = session_factory
db.wrapped_database.scoped_session = scoped_session_instance
# Set the query for the base model.
BaseModel.set_query(scoped_session_instance.query_property())
transaction = test_connection.begin()
try:
yield
finally:
transaction.rollback()
scoped_session_instance.remove()
@pytest.fixture(scope="session", autouse=True)
def fastapi_app(database, db_uri):
"""Load the GSO FastAPI app for testing purposes."""
app_settings.DATABASE_URI = db_uri
return init_gso_app(settings=app_settings)
@pytest.fixture(scope="session")
def test_client(fastapi_app):
return TestClient(fastapi_app)